Diagnostic Test
WARNING: This page is about a different variant/trim than selected.
- E-MOTOR COOLING SYSTEM
- Visually Inspect e-Motor Cooling System.
Were there any Leakages, Defective Parts or Improper Connections Found?
Yes
Repair/Replace the damaged parts in accordance with the service procedure.
No
- Go To 2
- Visually Inspect e-Motor Cooling System.
- CHECK TEMPERATURE SENSOR
- Vehicle ignition off and without charging (at least 6 hours).
- Measure ambient temperature and record.
- Using Scan tool, measure e-Motor Stator Temperature.
Is the difference between e-Motor stator temperature and ambient temperature greater than 8 degrees Celsius?
Yes
- Go To 3
No
- Clear all fault codes, key OFF, wait 30 seconds, then key ON, but do not crank, wait 30 seconds.
- If fault of interest is still present, go to 3. Otherwise, troubleshooting is complete.
- Perform the INTERMITTENT CONDITION diagnostic procedure. Refer to INTERMITTENT CONDITION .
- CHECK TEMPERATURE SENSOR WIRING HARNESS
- Disconnect temperature sensor wiring harness from PIM (28-way) and from e-Motor (6-way connector WITHOUT yellow clip).
- Check the harness for connector corrosion on both sides of the wiring harness. If temperature sensor wiring harness connectors have moderate to high corrosion, then replace wiring harness.
- Check continuity between motor side pin 5 to PIM side pin 23; motor side pin 6 to PIM side pin 22.
Were any problems found?
Yes
Repair wire Harness in accordance with the Service Procedure.
No
- Go To 4
- CHECK TEMPERATURE SENSOR SIGNAL PINS ON E-MOTOR
E-machine temperature sensor Sensor type: NTC-10K (inside of E-machine) NTC Resistance Temperature Curve: Temp. [°C] Temp. [°F] R Nom [Ohm] R Min [Ohm] R Max [Ohm] 60 140 2826 2743 2909 55 131 3335 3233 3437 50 122 3955 3829 4081 45 113 4712 4556 4868 40 104 5642 5447 5837 35 95 6791 6546 7035 30 86 8217 7910 8525 25 77 10000 9610 10389 20 68 12240 11745 12735 15 59 15074 14440 15708 10 50 18683 17865 19500 5 41 23310 22250 24370 0 32 29285 27901 30670 -5 23 37060 35240 38881 -10 14 47256 44844 49669 -15 5 60737 57515 63959 -20 -4 78713 74373 83052 - Measure the resistance between Pin 5, 6.
Is the resistance outside the value specified in the temperature/resistance reference table?
Yes
- Replace the e-Motor. Refer to MOTOR, ELECTRIC, REMOVAL .
- Perform the EVCU VERIFICATION TEST. Refer to EVCU VERIFICATION TEST .
No
- Replace the Power Inverter Module (PIM). Refer to MODULE, POWER INVERTER (PIM), REMOVAL .
- Perform the EVCU VERIFICATION TEST. Refer to EVCU VERIFICATION TEST .
- Measure the resistance between Pin 5, 6.